The whole of the 20th century has always put the car at the center. So by putting the pedestrian first, you create these livable places, I think, with more attraction and interest and character.

Climate change should be seen as the greatest challenge to face man and treated as a much bigger priority in the United Kingdom.

We might be more inclined to think about the longer term if we were more aware of what is happening around us. Perhaps daily weather forecasts could include a few basic facts about the Earth's vital signs or details of where climate change is increasing the likelihood of damaging weather?

The sustainability revolution will, hopefully, be the third major social and economic turning point in human history, following the Neolithic Revolution - moving from hunter-gathering to farming - and the Industrial Revolution

Any difficulties which the world faces today will be as nothing compared to the full effects which global warming will have on the world-wide economy.

It is now 14 years since I first suggested that organic farming might have some benefits and ought to be taken seriously. I shall never forget the vehemence of the reaction.. much of it coming from the sort of people who regard agriculture as an industrial process, with production as the sole yardstick of success.